Michael Newman
@MikeNewmQuantum
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Research scientist @GoogleQuantumAI, perennially disappointed Michigan fan, amateur Go player.
Joined July 2022
Today we're introducing our new quantum chip, Willow! . Willow is our first below-threshold quantum processor, which you can now read about in Nature @KJSatz and I also wrote a blog about it TLDR: QEC is blasting off. 🚀🚀🚀
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RT @CraigGidney: I'm often asked if I'll redo the 2019 quantum factoring estimate. Denser storage by yokes, smaller magic factories by cult….
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RT @CraigGidney: Mike finally paid for the "pro" version of sketchup, so we owned the 3d models attached to the paper, meaning the yoked su….
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Man, what an exciting time. I love working in this field. Awesome progress in neutral atoms.
Our holiday gift this year from @QueraComputing is magic 🪄 We experimentally perform magic state distillation, a key building block of large-scale quantum computers, with distance 3 & 5 logical qubits on our newly built Gemini-class neutral atom computer.
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Make theory work harder so your experiments don’t have to. Strong error suppression on a hex-grid surface code!.
But wait, there's more!. Check out this paper on dynamic circuit implementations of the surface code, such as compiling to iSwap gates. Congratulations @AEickbusch @mattjmcewen @AlexisMorvan1 and the whole team at @GoogleQuantumAI!.
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Universal logic in a below-threshold color code. The QEC hits keep on coming.
Like the surface code? Love the color code. - Error suppression Λ3/5 = 1.56.- Logical randomized benchmarking.- Magic states.- Lattice surgery. Congratulations to @NathanLacroix, Alex Bourassa, and the whole team @GoogleQuantumAI and @GoogleDeepMind.
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RT @preskill: Congratulations to all who contributed to the advances in quantum error correction recognized by the @PhysicsWorld Breakthrou….
physicsworld.com
Complementary research brings practical quantum computing closer
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@DolevBluvstein For those interested in reading more, . blog: paper:
nature.com
Nature - Two below-threshold surface code memories on superconducting processors markedly reduce logical error rates, achieving high efficiency and real-time decoding, indicating potential for...
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Our work on below-threshold error correction has won IOP Publishing's Physics World Breakthrough of the Year! . Shared with @DolevBluvstein et al.'s amazing work on neutral atoms. Congrats to the field of quantum error correction! Excited for what's next.
physicsworld.com
Complementary research brings practical quantum computing closer
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Parents: saw something about quantum computing we finally understood. Me: Amazing! Please send me. Love accessible descriptions in the media. Parents:
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RT @GoogleQuantumAI: Meet Willow: Our state-of-the-art quantum chip. It's the first quantum chip to show exponential error reduction as qub….
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Our neural network decoder published today in Nature, see Really cool to work with my Google DeepMind colleagues on this one. And I think there's a lot more space for machine learning to assist in developing quantum computers.
nature.com
Nature - A recurrent, transformer-based neural network, called AlphaQubit, learns high-accuracy error decoding to suppress the errors that occur in quantum systems, opening the prospect of using...
AlphaQubit draws on Transformers to decode quantum computers, leading to a new state of the art in quantum error correction accuracy. An exciting intersection of AI + quantum computing - we’re sharing more in @Nature today.
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RT @CraigGidney: Been working on "Magic state cultivation: growing T states as cheap as CNOT gates" all year. It's finally out: https://t.c….
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"Magic state cultivation: growing T states as cheap as CNOT gates" by @CraigGidney, Noah, and Cody My colleagues out here writing bangers. Fault-tolerant T-gates as cheap and easy as Clifford gates. We are so back (and really we never left).
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It's an unbelievably exciting time to be working on QEC, and we have an amazing team at @GoogleQuantumAI. I count myself so lucky to be working with such a talented and passionate bunch. This error correction stuff really works, and I think it’s only going to get better.
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Finally, using repetition codes, we check for logical error floors. Good news: the 1e-6 error floor we saw in is gone!. Bad news: we found a new error floor at 1e-10! Gonna have to figure this one out next…
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This performance is repeatable over long time scales, where we can take data over 16 hours and see minimal variation in logical error rate.
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On a similar 72-qubit device, we integrate with a high-accuracy real-time decoder. We maintain below-threshold performance in real time, with a 63 microsecond decoder latency while running up to a million error correction cycles.
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With a below threshold surface code, we can do crazy stuff like run QEC simulations in situ by manually injecting errors. This shows the characteristic threshold crossing we’ve seen in a million theory papers, but on an actual quantum computer!
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